Brake-hanger mounting.



1. R. GORNWALL.

BRAKE HANGER MOUNTING. PPLIUATION FILED NOV. 29, 1910.

989,339. 1111111111111l Apr. 11, 1911.

FREDERICK R. CORNWALL, OF ST. LOUIS, MISSOURI, ASSIGNOR T0 CHICAGORAILWAY EQUIPMENT COMPANY, OF CHICAGO, ILLINOIS, .A CORPORATION OFILLINOIS.

BRAKE-HANGER MOUNTING.

To all 'whom it may concern:

Be it known that I, FREDERICK R. CORN- wALL, a citizen of the UnitedStates, residing at St. Louis, Missouri, have invented a certain new anduseful Improvement in Brake-Hanger Mountings, of which the following isa full, clear, and eXact description, such as will enable others skilledin the art to which itappertains to make and use the same, referencebeing had to the accompanying drawings, forming part `of thisspecification, in which- Figure l is a side elevational view of myimproved hanger mounting; Fig. 2 is a horizontal sectional view throughthe same. Fig. 3 is a sectional view on the line 3-3 of Fig. 2.

This invention relates to a new and useful improvement in a brake hangermounting designed particularly for use in car trucks, the object beingto construct a mounting of the character described, in the nature of abracket to be attached in position so as to automatically provide a newpivotal support to the brake hanger when the wearing of the shoe or thereduction in the diameter of the wheel with which the brake shoecooperates renders a change in the pivotal support of the hangernecessary or desirable.

In recent years, steel car wheels have gone into extensive use, with theresult that repeated grinding of these wheels for the purpose of truingthem when worn and eX- tending their life has necessitated some changesin the brake rigging to meet these new conditions. For instance, a wheel33 inches in diameter may be reduced eventually to 30 inches indiameter, and such reduction will change the relation of the brake beamto the wheels, particularly if the old pivotal supports for the brakebeams remain unchanged. The tendency is, when the wheel is reduced andthe brake shoe worn, to bind or cramp the brake in a set position, as,for instance, when a wheel is moved in the direction of the arrow, asshown by the dotted lines in Fig. l. This results in an abnormal upwardmovement of the brake shoe on the wheel, which causes the brake head tocoperate with the brake hanger, as a toggle link, which renders it hardand diflicult to release the brakes.

According to my improvement, when the wheel is of the usual diameter andthe brake Specification of Letters Patent.

Application filed November 29, 1910.

Patented Apr. I1, 1911. Serial No. 594,694.

shoe new, the brake hanger is arranged in its support on the columnguide or other part of the truck in the usual manner. When the brakeshoe is worn or the wheel is reduced so that the brake shoe rides upt-he wheel an abnormal extent, which movement would tend to produce thecramping action mentioned, I provide a bracket which may be secured inposition on the column guide or other part of the truck, or which may bemade an integral part of the truck, said bracket consisting of twohorizontally disposed track members preferably connected at their endshaving ratchet teeth which cooperate with a two-part eXpansible blockforming the brake hanger, whereby when the brake is applied and thebrake beam swings to an abnormally high position, the hanger draws thebearing block inwardly toward the wheel thereby automatically changingthe location of the support for the hanger. This automatic adjustment ofthe hanger block or bearing follows the wearing of the shoe or thereduction in diameter of the wheel, and the brake beam is thus caused tooccupy its normal relation to the wheel at all times. In the event thata new wheel is placed in position or a new brake shoe employed, whichwould tend to destroy the proper relation between the brake beam andwheel after the same has moved inwardly, the members of the hanger blockare compressed and the hanger block retracted to the desired position.The ratchet teeth prevent retrograde movement of the hanger block topermit the automatic forward feed of said block to change the locationof the hanger whenever the angle assumed by the hanger in theapplication of the brakes is sufficient to overcome the frictionalresistance incident to the expansible hanger block.

In the drawings, l indicates the column guide of the truck which isprovided with a suitable frame consisting of the horizontal bars 2having ratchet teeth on theik inner edges, the ends of said bars beingtpl-eferably connected by vertical members 3.

et is a section of the hanger block also having ratchet teeth in achannel in which lits the lower ratcheted bar 2.

5 is the upper section of the hanger block which is preferably separablefrom the block 4 and which embraces the bearing lug of said block 4whereby both parts of the bearing block may move together along thehorizontal ratcheted bars 2, and, at the same time, the parts of saidblock may be extended to engage said bars by lneans of the springs, 6.

7 is a brake hanger.

8 is the brake head on the end of the beam, and 9 is the brake shoe.

I am aware that minor changes may be made in the construction andarrangement of the several parts of my device without in the leastdeparting from the nature and principle of my invention.

I claim:

l. The combination of a car truck having means for the suspension of thebrake hanger therefrom, and means for automatically changing the pointof suspension of said brake hanger with relation to said truck.

2. The combination of a car truck having means for the suspension of thebrake hanger therefrom, a wheel, and means for automatically adjustingthe point of suspension of said brake hanger toward said wheel.

3. The combination with a car truck of a brake hanger support mountedthereon, a brake hanger suspended from said support, and means forautomatically changing the position of said support whenever the brakehanger reaches an abnormal angle of inclination.

4L. The combination with a car truck, of a movable brake hanger supportmounted thereon, a brake hanger suspended from said. support, andautomatic means for permitting the movement of said support and holdingsaid support in different positions whenever the angle of inclination ofthe brake hanger becomes abnormal.

5. The combination with a car truck, of a two -part automaticallyadjustable brake hanger support mounted thereon, and a brake hangersuspended from said support.

6. The combination with a car truck, of an expansible brake hangersupport mounted thereon, yielding means for expanding the parts of saidsupport and a brake hanger suspended therefrom.

7. The combination of a brake hanger support, a plurality of toothedbars arranged thereon, and an expansible brake hanger supportcooperating with said toothed bars.

S. The combination with a car truck, of a plurality of bars arrangedthereon and an expansible two-part brake hanger support arranged betweensaid bars.

9. The combination with a car truck, of a brake hanger support mountedthereon, said support comprising' two pieces and springs for forcingsaid pieces apart.

l0. The combination with a car truck, of a two-part brake hanger supportmounted thereon, the parts of said brake hanger support permittingvertical expansion but insuring Vcoincident horizontal movement.

1l. A brake hanger support comprising a lug for receiving the brakehanger, and a channel portion for cooperating with a truck guide andmoving thereon.

l2. A brake hanger support comprising a lug for receiving the brakehanger, and a notched channel portion for cooperating with a truckguide.

13. A brake hanger support comprising two members engaging each other soas to permit vertical movement and insure coincident horizontalmovement, both of said portions being provided with guiding facescooperating with the horizontally disposed truck guides. y

In testimony whereof I hereunto afliX my signature in the presence oftwo witnesses, this 25th day of November, 1910.

FREDERICK R. ooENwALL'.

lVitnesses M. P. SMITH, BLANCHE L. CROWLEY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

